I have a lab question that is asking if the soda ash in our analysis was NaHCO3 instead of Na2CO3, how would the volume of acid added change from (a) the starting point to the phenolphthalein end point? (b) the phenolphthalein end point to the bromocresol green end point? (c) the original starting point to the bromocresol green end point?

Question

I think all the parts would require less HCl to be added since NaHCo3 is more acidic (less basic) than Na2Co3?

I also have the same question for if it was replaced with NaOH...would all the parts require more acid to be added because NaOH is more basic than Na2CO3?
Thanks!